Flush valve



Patented Dec. 30, 1924.

UNITED STATESv 1,521,355 PATENT OFFICE. j

EDWARD BURNS, OF NEW BRITAIN, CONNECTICUT, ASSIGNOB, BY MmNE ASSIGNMENTS, T THE BEATN & CADWELL MANUFACTURING COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION.

FLUSH VALVE.

Application mea January so, 1929. serial no. 615331.

To all 'whom it may concern.' Be it known that I, rEDwARD PATRICK BURNs, a citizen of the United States, residing at New Britain, in the county of 6 Hartford and State of Connecticut, haveinvented certain new and useful Improvements in Flush Valves, of which the followin is a specification.

y invention relates to `improvements 1n l0 flushyalves of the form that is shown in applications filed Vby myself April 12, 1921, Serial' No. 460,794, and IOctober 29, `Y1921, Serial No. 511,301, and the object of my yimprovement isto incorporate in -a flush valve structure that yin its operative features correspondsv closely to the device shown and described in application' Serial No.1511,301 mentioned above asto certain details inthe structural l features,l particularly as `appliedl to theair chamber and operating button or knob; whereby thereis attained in the con-y in-use.4

In the accompanying drawing Figure-f1 is a side' elevation of my improved Hushvl valve. Y l

Figure 2"' is aplan view of the same.

Figure3 isa plan view withthe casing cove-r part removed.`

Figure 4vis a sectional view on an enlar scale on the line 4-4 of Fig. 2.

igure 5 `isa plan view of the main valve structure and adjacent parts.

Figure 6 is a 'side elevation of the auxiliary valve structure and the operating button or knob and the adjacent parts.

My improved lushvalve is based u on the structure vthat is shown and descri ed` l in application Serial No. 511,301, and comprises a generally pear-shaped casing structure having the water inlet 10 at one side,

having at the lower end a downwardly ex' tending nipple'll that is exteriorly screw- 12, and being provided at theV upper end with the button or knob 13 that serves as the tripping means or operating means by being adapted to be depressed to operate the valve.

Said button 13 is restored to the normal elevated position automatically through the operation of the mechanism that is housed within the casing and which mechanism 'there is provided in the interior a part thatv `with the middle may include a spring 14. 55

Structurally said casing structure comprises for the exterior a casing cover part 15 at the upper' end, a base art 16 at the lower end, and the casing bo y part 17 intermediate said first mentioned parts, cooperating screw-threaded portions 18 of suitable form serving as the means of interconnecting said parts.

The inlet connection 10 is made integral with theecasing body part 17 and the nipple 05 -11 for connecting with the outlet' pipe 12 is made integral with the base part16.

As a part of the fixed casing structure is designated as thewater chamber to 19 70 that is positioned on the upper Side o the body part 17 and is secured thereto by means of a flange-like annular border portion 20 through the medium of the screws 21. Said annular border portion 20 serves as a seat, is opposed to a similar seat 2,2 on the body part 17, Vand interposed between. said seats 20 and 22 is the ed e portion of a circular diaphragm 23, whic may be made of any suitable material, such as metal or rubber. 'Phe diaphragm 23 bridges generally the upper portion of the body part 17 and serves as the top wall of the main valve chamber 24, the latter being connected lwith the inlet 10.

The main valve 25 is ixedly connected ortion of the diaphragm 23, on the lower ace thereof, and is raised and lowered relatively to the valve seat 26 to correspond to the movements of said diaphragm.

The casing body part 17 extends generally across the lower side of the valve chamber 24 so as to provide the fixed, lower wall 27 thereof, which wall 27 is of annular form, extending around the main valve seat 26.

Extenlding downwardly from the valve seat 26and supported by said annular wall 27, is the tubular structure 28 that encloses the main discharge passage 29. t

Said tu'bular structure 28, it will be noted,

extends through the nipple, 11 and termior jet, after the manner of an injector, with the vlower end portion 31 of the discharge passage 29 appreciably smaller in diameter than the upper end portion 32, adjacent the and between the same and the general strucgenerally inwar ture of the water chamber top water chamber 34.

Said water chamber top 19 comprises just 1,9 is the .inside the bordel' andi scatl portion 20 a curved, dome-shaped portion that extends ly and upwardly from said seat portion 20 and is surmounted by the axially positioned tubular structure 36.

The tubular structure 36 comprises a lower portion 37 of relatively large diameter, an inwardly directed end wall 38 at the' upper -end of said lower portion 37, and an upper portion 39'of'appreciably smaller diameter extending upwardly from said end wall 38.

The lower portion 37 is of uniform diam-` eter and operates as a cylinder for the piston-like stem 40 'of the main valve 25, which stemis'- fluted\ or corrugated. so as to provide longitudinal passages 41 for water.

v The upper and major portion of the upper portion 39 has a bore that is an operative fit -for the' rod 42 that serves as the valve stem for the auxiliary valve 43. The

. tion 39 is slightly enlarged, so as to bore 44 at the lower end of said upper por rovide clearance for the rod 42 for `water Izind the side wall of said enlarged ortion or bore44 is provided with a plurality of perforations 45 for the escape of water.

The corner 46 at the junction of theupper portion 39 and the end wall 38'1serves as a seat for said auxiliary valve 43.

The .auxiliary valve 43, as described, is

operative tol control the outflow of water for cooperating with the' valve seat Y26.

The', auxiliary valve'43 is also rovided with a contacting washer 51 of yiel ing material.

. The upper end of the 'piston-like stem 40 is chambered, as shown at 52, to house the lower end portion of the auxiliary valve 43 when the main valve 25 and connected parts are in the extreme upper position.

The water chamber 34 is connected at all times with the water supply by means of a restricted passage 1n any proper manner, the means for effecting such connection in the present instance being provided by means of a small tube 53 that is housed in a suitable continuous perforation 54 in superimposed portions of the head 47, dia. phragm 23, and main valve- 25.

The piston-like stem 40 has an axial bore 55 that isaopen at the upper end and serves as a spring chamber for housing the spring 14, which spring is of coil form.

'lhc upper and major portion of the spring 14 encloscs a spring guide 5G that extends downwardly from the auxiliary valve 43 and that also serves after the manner of a nut as the means for holding said. valve 43 on the rod or stem 42, the upper end portion 57 being longitudinally bored and screw-threaded to cooperate with the threaded lower end portion 58 of said rod or stem 42. A diminutive shoulder 59 on said rod 42 limits the upward movement or position of the valve 43 along said rod 42.

The stem or rod 42 projects upwardly above its adjace t support-ing structure that is provided by tie tubular structure 36, said adjacent supporting structure consisting of the part that is designated as the upper portion 39. Said upper portion 39 is of tubular, sleeve-like form, is of appreciable length so as to be adapted to operate eciently as a guide for the rod 42, and` has the perforations or vent openings 45 in the side wall, as mentioned. Said `rod v42 operates freely' in said sleeve-like upper portion 39, the structure being free from any form of stung box. Thus under conditions of use y water will be ejected through the vent openings 45 and some will pass along the rod 42. Means were provided in the previous struct-ure for diverting such water away from the opening in thecasing cover art 15 for the operating handle 1n the orm of a water-shed device or umbrella..l In the present instance means for effecting the same result are provided of diierentform, as will be described. f

In the present instance, the upper end portion 60 ofthe rod 42 projects only slightly above the adjacent supporting portion 39, the amount being sulicient to provide -for the slight movement required for the' rod 42 and some extra for clearance. The water-shed or umbrella 61 is the form of a metallic cup, positioned in inverted form, and mounted on the end of the rod 42, the side wall extending downwardly over the vent openings 45, and which con-v stitutes the body structure of the handle or.

'with the word PUS button 13. A' .boss 62 on the cover part 15 has an opening 64 that is an loperative fit for the side wall 63 of the umbrella or body 61. :A contact button serves as the handle or button pro er 13, being mounted on the end wall 65 o the body 61, and this part may be made ofl orcelain and marked or some other suitable inscription.

The casing cover part 15 is dome-shaped and lprovides an air chamber 66 immediately exterior to the waterchamber 34 and which is operative `to receive the water that is ejected from said water chamber 34 in the manner already explained.

`One or more perforations 67 may be provided in the side wall of 'the .casing cover part 15 to admit air and maintain atmospheric pressure -in the interior.

- In order to drain water that may be admitted to the air chamber 66 one or more connecting passages 68 are provided leading to the drain chamber 33. As` shown, said passages alternate with the 'holding screws 21 and are in the form of continuous openings that pass through the material of the flange 20 of the water chamber top 19,

lthe diaphragm 23, and the solid material 69 at the border of the casing body part 17.

In use, the drainage of the air chamber 66,V is accelerated'by the asperator effect produced by the discharge from the main discharge passage 29, which is relativel restricted, as described, and terminates s ightly below the adjacent and concentric discharge outlet 30 for the drain chamber 33.

In use, the main valve 25 and the auxiliary valve 43 are normally closed; water is admitted to 'the valve chamber 24 below the diaphragm 23 and exterior to the valve seat 26 and the discharge passage 29; the water chamber 34 is filled with water, the water being retained therein by the auxiliary valve 43; and the air chamber 66 is in the drained condition.

The spring 14 tends to hold both valves in the closed position and the water pressure also cooperates to effect this result.

To operate the device the button 13 is .depressed, soas to unseat the auxiliary valve, the operation of the handle or button being momenta only. Thus the water chamber 34 is relieved of pressure, the water therein is ejected through the perforations from the water supply through the restricted passage that is provided by the diminutive connectin tube 53.

The dimensions of said tube 53 determine the rate-of such filling of the Water chamber 34 and'the period of time for the flow of water for flushing, as such filling is accom anied by a reverse movement of the diap iragm which is terminated by a seatin of the main valve on the main valve seat.

t' l`he umbrella or body 61 has at the lower end of its cylindrical side wall 63 an outwardly Haring umbrella-like `enlargement 68 that serves'to divert water from the interior laterally and also opera-tes as a stop` to prevent the removal of the knob or handle structure 13 while the casing arts are in the usual assembled position the upward movement thereof. Said enlargement in its uppermost position enga es with the lower end portion of the bo er wall for the opening 64 in the boss 62.

I claim as my invention i l. In a `flush valve, an inner casing part having an upper portion that is provided with a pilot opening, a pilot valve housed within said casing art, a. stem projectedl valve, through' said` upwardly from sai upper portion, and havin a free end portion that extends above said'upper portion, said stem comprising an elongated body portion and said upper portion 'havin guide means for cooperating with said y tion, a button-,tripping member mount on said free end portion of the stem, and means that are operatively free from said stem for guiding said button-tripping member.

y v limiting 2. In a flush valve, a casing com rising an interior structure that is divid by a diaphragm so as to provide a water cham;

ber on the upper side thereof and a cover part enclosing said water chamber, the wall of said water chamber having a pilot opening, ban auxiliary valve `for said opening having a stem that projects upwardly through said wall, said cover part having aA guide opening in alignment with said stem, a lbutton-tripping member and said member being loosely mounted directly .on the upper end of said stem and guided for free movement in said guide opening and `said member having a wall structure that extends downwardly over said pilot4 opening and in spaced relation thereto.

3.In a flush valve as described vv`in claim 2, the extreme lower end portion of said wall structure being flared to a larger diameter than the border wallof said guide opening. 4. In a flush valve, a casing having a pilot opening, a valve for said opening having an upwardly directed stem, 'a cover having an openingin registration with said stem, a button-tripping member mounted on said stem, means for guiding said stem, other means for guidingr said member, and the mounting of said member on the stem being such as to permit of limited relative lateral movement thereof.

lll

' structure having a pilot opening 'adjacent the upper end, an exterior casing structure surmounting said interior casing structure and having an opening for a tripping device at the upper end portion, a pilot valve having a stem that is projected upwardly into said last named opening, means for guiding said stem, and a tripping device, said tripping device being 'in the form of la-'cup-like structure that is guided for free movement in said last named opening and that is loose] mounted on the tip end of said stem. 6. fil al flush valve, a casing having a water chamber that is provided with a top wall, said top wall having a pilot opening, a .valve for said opening having an upwardly directed stem, and said top wall having 'an upwardly directed tubular portion that is in contact with Aand serves as a guide for said stem.

7. In a flush valve a casing comprising an interior portion, mechanism housed generally within said interior portion and com-v I prising a stem for a lot valve'that projects upwardly throug the enclosing wall, a cover exterior to the upper portion of said interior portion, said cover having an ture of cup-like form that is admitted to said opening in the cover from the inside thereof.

EDWARD PATRICK BURNS. 

